Dithane F-45® Rainshield®

  • Fungicide


  • FRAC M3

Plant disease control, improved yield

Dithane® F-45 fungicide is a broad-spectrum fungicide containing the active ingredient mancozeb. It is a contact fungicide with high protectant activity to control a wide range of fungal diseases. Dithane has been registered for use on dozens of crops for more than 50 years.

Find supplemental labels for this product


Rainshield® technology


Rainshield technology provides exceptional rainfastness, re-distribution qualities and plant adhesion so that more fungicide stays on the plant even after heavy rain or in extreme heat and humidity.

Multi-site Inhibitor


Dithane is a multi-site mode of action product (FRAC Group M3) to stop fungi at various points during development.

Crop Safety


Dithane has a high margin of crop safety. It has low persistence in the environment with no leaching potential.

Controlled diseases

This product delivers effective disease control against the following:

  • Alternaria Leaf Spot
  • Anthracnose
  • Bacterial Speck and Spot
  • Botrytis Leaf Blight
  • Cercospora Leaf Spot
  • Downy Mildew
  • Early Blight
  • Gummy Stem Blight
  • Late Blight
  • Neck Rot
  • Phomopsis Blight
  • Rust
  • Scab

Refer to the Product Label for complete product efficacy information.

Find labels for this product

State Registrations

  • Registered
  • Unregistered

Technical Specifications

  • Active Ingredient

    Mancozeb: a coordination product of zinc ion and manganese ethylene bisdithiocarbamate

  • Application Rate

    Lettuce and Peppers: 1.2 – 1.6 qt/A*
    Onions: 2.4 qt/A
    Potatoes: 0.4 – 1.6 qt/A 
    Tomatoes: 1.2 – 1.6 qt/A*

    *Rate can be increased to 2.4 qts/A east of the Mississippi River for peppers and tomatoes.

  • Application Method

    Ground, air, chemigation

  • Fungicide Group

    FRAC M3

Other products

Looking for similar or complementary products? Check out these related products.

Tru Choice logo

Prepay and Save

Save Up to 10% on Crop Protection

With the TruChoice® Offer, you can save at the time of purchase on 100+ leading crop protection products like this one. Fund a prepay account with Corteva Agriscience to start saving.

Tell me more

Always read and follow label directions.